JPS61208531A - Pen input device - Google Patents

Abstract

PURPOSE:To check the propriety of transcription with a pen input device which detects the pressure applied to the core of a pen and its direction and recognizes the written characters, by comparing the input data obtained when the arithmetic result is transcribed with said arithmetic result. CONSTITUTION:A CPU 11 stores the arithmetic result of an arithmetic part 20 in an X register of a memory part 21 and then displays it at a display part 22. In this case, the number of digits of the arithmetic result is set to an N register and a waiting state is kept until the input of characters is received after '-1' is added to the contents of the N register. When the input of characters is received, these input characters are written to the digit AN of an A register. Then the numerical values supplied to the N-th digit of the answer held by the X register and to the N-th digit of the A register are read out to a comparator 23 and compared with each other. If the coincidence is obtained, the same action is repeated. While the discordance signal is sent to the CPU 11 from the comparator 23 to drive an alarm circuit 24 in case an answer is transcribed in a wrong way.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a pen input system that detects the pressure applied to the pen core according to a writing operation and its direction, and recognizes and inputs written characters based on this. Regarding equipment.

[Prior art and its problems]

2. Description of the Related Art In recent years, pen input devices that recognize input characters by detecting pressure applied to a pen core and its direction in response to a writing operation have been considered. However, this species
In pen input devices, standard fonts of characters to be input are predetermined, and there is a problem in that the recognition rate of characters, such as idiosyncratic characters that differ from person to person, is not sufficient, and the usability is poor. In order to solve such problems, the present applicant registers the user's handwritten input characters as a standard pattern memory in the standard pattern memory, and then registers the handwritten input data and the standard pattern memory stored in the standard pattern memory. Patent application No. 59-15021 was first published for a pen input recognition device that recognized input characters by calculating the correlation value with the mother turn.
The application was filed under No. 0. According to this pen input recognition device, it is possible to reliably recognize characters handwritten with a pen even if the fonts are different, and it is possible to make the characters easy to use. However, if this type of pen input recognition device is used, it is possible to input calculation data by writing and perform word and land calculations, but it is necessary to write the calculation results on paper. There is a risk of copying errors.

[Purpose of the invention]

The present invention has been made in view of the above points, and it is an object of the present invention to provide a pen input device that can automatically check and notify even if errors occur when dictating calculation results on paper. With the goal.

[Key points of the invention]

The present invention performs calculations according to calculation data input by writing operations, displays the calculation results on a display unit, and accepts written input after that, so that the input data and the input data when the calculation results are copied are This is to check whether the transcription is correct or not by comparing it with the result of the calculation.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings. 1st
The figure shows yI as a writing instrument? - This is an example of a configuration using Le Pen. In FIGS. 1(,) and (b), l is the main body and 2 is the case. A pole-covering core 3 is disposed within the turf 2 along its central axis, and its base is supported by the main body 1. 73 above? -ru d
The tip of the core J is led out from an opening 2a formed at the tip of the case 2. The sol pen core 3 is attached to a spring (a) fixed to the main body 1.

The central portion is supported by 4b and 4c at equal intervals and held at the center of the case 2. And the above spring (a, 4
b, pressure-sensitive sweets such as semiconductor strain data (hereinafter abbreviated as strain darts) 5a;

5b is installed, and the strain data 5 is attached to the base of the Reuben wick 3.
c is provided. The above distortion goo-ri 5a.

5b detects the pressure applied to the sol pen core 3 in the xt y and 7j directions perpendicular to the axis when marking a defect, and the strain gauge 5c detects the pressure that the sol pen core 3 receives in the axial direction, the tab p,
Detects pressure in the z direction. And the strain gauge 5a
, 5b, and 5c are connected to a processing circuit provided within the main body 1 or separately from the main body 1. The details of this processing circuit will be explained below with reference to FIG.

In FIG. 2, 11 is a CPU, and this CPU 11 includes a mode key 6 for switching between standard nof turn registration mode and 8R mode, a skif (SK) key 7, a correction key 8 for correcting input characters, and input contents. , a clear key 9 for clearing calculation results, etc., and various operation keys are connected. In this case, the operation signal of the mode key 6 is inputted via the binary counter 12. 13 is a DC amplifier, into which the signal XF)'12 from the strain gauges 5a, 5b and EC is input. The output of this DC amplifier f13 is the conversion circuit 1
After the signal is converted into digital data in step 4, it is sent to the waveform cutting section 15. This waveform cutting section 15 is a CPU I
According to the control command from J, the waveform of the input signal is cut out and stored in the data memory section 16, and then transferred to the standardized data memory section 17. This standardized data memo IJ part 1
7 outputs stored data to the registered standard pattern section 18 in the pattern registration mode, and outputs stored data to the recognition calculation section 19 in the recognition mode, in response to instructions from the CPU IJ. The registered standard pattern section 18 stores various standard base turns for, for example, alphabets, numbers, symbols, etc., and outputs the stored data to the recognition calculation section 19 in accordance with instructions from the CPU 11. This recognition calculation unit 1
9 performs character recognition by comparing the data written in the standardized data memory section 17 with the standard/mother turn stored in the registered standard mother turn section 18, and converts the recognition result into C.
Pressure on PU J J.

The CPU JJ outputs the result recognized by the recognition calculation unit 19 to the calculation unit 20 or the memory unit 21.

The calculation unit 20 performs calculations according to data from the CPU I 1 and outputs the calculation results to the memory unit 21 . This memory section 21 includes a plurality of storage units X, Y,
A, N, etc., and stores the calculation results of the calculation section 20, as well as the input character recognition results output from the CPU ZZ. The data stored in the memory section 21 is sent to the display section 22 and displayed.

Further, the calculation result data of the calculation unit 20 stored in the memory unit 21 and the data input thereafter are sent to the comparison circuit 23 and compared for coincidence, and the comparison result is sent to the CPU IJ.
sent to. The CPU 11 also includes a sound alarm circuit 24.
is connected, and when the comparison circuit 23 outputs a mismatch signal, the alarm circuit 24 is driven.

Next, the operation of the above embodiment will be explained. The registered standard pattern section 18 includes, for example, numerical values "0" to "9", decimal point ",",
Standard patterns such as function symbol r+Jr-J "x", "÷", "=" etc. are registered in advance, but these standard patterns can be changed arbitrarily by operating the mode key 6 and specifying the pattern registration mode. Can be set to .

When a desired character is input by hand with the pen shown in FIG. 1 while the character mode is specified by the mode key 6, the pressure applied to the solben wick 3 is distorted by the data 5h, 5b, 5c. After being amplified by the amplifier 13, it is converted into digital data by the A/D conversion circuit 14 and sent to the waveform extraction section 15. The waveform cutting section 15 cuts out the waveform of the input signal according to a control command from the CPU IJ and stores it in the data memory section 16.
It is output to the recognition calculation section 19 via the standardized data memory section 17. The recognition calculation section 19 performs character recognition by comparing the data written in the standardized data memory section 17 with the standard pattern stored in the registered standard pattern section 18, and outputs the recognition result to the CPU 11. .

The CPU 11 sends the result recognized by the recognition calculation unit 19 to the memory unit 21 via the calculation unit 20, stores it in the N register, and displays it on the display unit 22.

In this case, if an arithmetic symbol is included during character recognition, the CPU 11 causes the arithmetic unit 20 to perform the arithmetic operation, sends the arithmetic result to the memory unit 21, stores it in the N register, and displays it on the display unit 22. to be displayed. Further, when the CPU 11 gives a calculation instruction to the calculation unit 20 to perform calculation, after the calculation is completed, the CPU 11 accepts the subsequent written input without changing the display content on the display unit 22 and proceeds to the flowchart of FIG. 3. Executes the processing operation shown. Now, for example, 123X456=5
When calculating the number 6088, if the above formula is written down in sequence, the characters are recognized and input as described above. Then, when the CPU 11 recognizes "=", it gives an arithmetic command to the arithmetic section 20 to perform the arithmetic operation, sends the arithmetic result r56088J to the memory section 21, stores it, and displays it on the display section 22 as the answer of the calculation. do. Then, when the user copies the above answer, the input is accepted without changing the displayed content, and it is checked whether the answer has been copied correctly. That is, when the CPU 11 causes the arithmetic unit 20 to perform an arithmetic operation and writes the result of the arithmetic operation to the N register of the memory unit 21, the CPU 11 sets the number of digits N to the N register as shown in step A1 of FIG. do. Then step A
Proceeding to step 2, after r-IJ the contents to the N register, it is determined in Stella fA3 whether the contents N of the N register have become "0". If the content N of the N register is not "0", the process advances to step A4 and waits until a character is input.

When a character is input in this state, the process proceeds to step A5 and the input character is written in the A digit of the A register, that is, in the A digit specified by the stored content N of the N register. Thereafter, in Stella 7'A6, the numerical values input in the Nth digit of the answer held in the X register and the Nth digit of the A register are read out to the display section 22 and compared. If it is determined in this step A6 that the data read out by the comparison circuit 23 match, the process returns to steps f) and 2 and the same operation is repeated, and the answer displayed on the display section 22 and , it is checked sequentially from the most significant digits to see if they match the digits that have been copied. If you copy the answer incorrectly, the judgment result in step A6 is NO, and a discrepancy signal is sent from the comparison circuit 23 to the CPU Z 1, the alarm circuit 24 is driven, and as shown in step 7''A7. Mistakes in writing will be reported to Day and others.

If the answer is correctly copied down to the last digit, the content N of the N register will be "0", so the judgment result in step A3 will be Yes, and the checking process will be completed.

In addition, if the calculation is to be performed again without using the above-mentioned check function, after the calculation is completed, the clear key 9 is operated to clear the displayed contents, and then a new input is performed.

In the above embodiment, if the answer is copied incorrectly, a sound is used to notify the user.

〔Effect of the invention〕

As detailed above, according to the present invention, in a pen input device that recognizes written characters by detecting the pressure applied to the core of a pen according to a writing motion and its direction, calculation data is input and calculations are performed. When the answer is displayed, the input will be accepted without changing the displayed content, and the input when the answer was transcribed will be compared with the answer displayed above, and if there is a discrepancy, a notification will be issued. Therefore, you can easily check for mistakes in your answers.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 (,) is a sectional view showing the main parts of the writing instrument, and FIG. 1 (b) is the same figure (!).
FIG. 2 is a diagram showing the configuration of the processing circuit, and FIG. 3 is a flowchart for explaining the operation. 1...Main body, 2...Case, 3...R~lepen core, 4m, 4b, 4e-spring, 5m,
5b, 5e...Semiconductor strain r-zu, 11
... CPU, 14 ... conversion circuit, 15 ... waveform extraction section, 16 ... data memo IJ section, 17 ...
Standardized data memory section, 18... Registration standard/4' tan section, 19... Recognition operation section, 2゜... Operation section, 21
. . . memory section, 22 . . . display section, 23 . . . comparison circuit, 24 . . . alarm circuit. Applicant's agent Patent attorney Takehiko Suzue 1st (a) (b)

Claims (1)

[Claims] In a pen input device that detects the pressure and direction applied to the pen core according to a writing motion to recognize and input written characters, the pen input device includes a calculation unit that performs calculation processing based on calculation data inputted by handwriting, and a calculation unit that performs calculation processing based on calculation data inputted by handwriting, and a memory section that stores the calculation results of the calculation section; a display section that displays the stored contents of the memory section; and after the calculation of the calculation section is completed, the calculation results are displayed on the display section and are used for writing input. a determining means for comparing the written input received by the means with the calculation result of the calculation section to determine whether or not they match, and a notification means for notifying the result of the determination. A pen input device featuring: